The government's decision to temporarily halt the final cleansing of farms affected by foot-and-mouth disease has been condemned by farmers' leaders and the opposition.

Downing Street has said a two-week review
is necessary to find out why farms in England and Wales are costing an average of £100,000 to disinfect - far higher than in Scotland and Europe.

Some contractors might be exploiting the crisis to make a quick profit, according to the minister for farming and the food industry, Lord Whitty.

He told BBC News: "We have spent over £2bn on this disease in total and we need to make sure any additional monies are spent wisely and sensibly and we are not taken for a ride."

'Cruel blow'

But William Hague described the move as another "cruel blow" to Britain's farmers and demanded to know why estimates of the true cost of the clean-up were not made sooner.

And President of the National
Farmers' Union, Ben Gill, said the delay would prevent farmers getting back into business.

Meanwhile, efforts have been stepped up to tackle the disease "hot spot" in North Yorkshire with the creation of a special "bio-security zone".

Across the rest of England and Wales, the government will continue preliminary cleansing and disinfecting but will halt the secondary cleansing, which goes on prior to re-stocking to prevent a recurrence of the disease, while the review takes place.

Foot-and-mouth facts

Total cases: 1,884

Slaughtered: 3,593,000

New cases Tuesday: 1

Awaiting slaughter: 27,000

Awaiting disposal: 11,000

A memo issued by the government's co-ordination centre set up to tackle the disease revealed that Prime Minister Tony Blair had personally demanded a check on "unacceptable" spending.

It is feared the total bill, presently running at £2m a day, could top £800m.

In Scotland, the cost to disinfect farms is said to
be £30,000 and elsewhere in Europe it is about £10,000.

To date only 1,700 farms out of over 8,000 have received final cleansing and disinfection and only £75m has been paid out.

'Mismanagement'

Mr Hague is asking why the cost of disinfecting farms across England and Wales was not known sooner.

He said: "The government should have had those costs under control in the first place
and should have been able to bring them under control without holding up the
clean-up process."

The prime minister has indicated that six-figure sums per farm are unacceptable

Government memo

Farmers and rural communities were suffering "at the hands of government mismanagement and incompetence," Mr Hague added.

He also repeated his call for a public inquiry into the handling of the
crisis and accused the government of "constant dither and delay".

But a spokesman for Mr Blair said the delay would not be "that
significant" in terms of farmers' re-stocking operations.

While the prime minister would continue to commit all available resources to overcoming the disease, it was essential that they
were used efficiently, the spokesman added.

"There is no point in spending money if you are not spending it in the most
cost-effective way," he concluded.

A spokesman for the Department of Environment, Farming and Rural Affairs (Defra) said it was possible items unrelated to cleansing were being included in the bill.

'Outcry'

He said: "The government is not required to pay for [secondary cleansing] but so far has been doing so.

"The basis on which the government pays for this is being reviewed for a number of reasons.

"It does not prevent farmers carrying out this work at their own expense."

Farms have to be scrupulously disinfected

But the NFU's Staffordshire Spokesman, Alan Edwards, added that if the cost was passed
onto farmers there would be an "almighty outcry".

The Countryside Alliance also warned any significant delay could "spell disaster" for many small livestock farmers
"already on the edge".

The Chief Executive, Richard Burge, said: "The plight of our farmers is too great
to allow any long hiatus in this urgent clean-up merely for a review of costs to
be undertaken.

"If the government itself unnecessarily holds up giving such farms a clean
bill of health it will be presiding over the needless disappearance of many of
the mixed and small farming businesses whose future it says it wants to
encourage and promote."